Lawn-sprinkler.



G. BALLREIGH.

LAWN SPRINKLER.

APPLICATION FILED 0012s, 1913.

1,116,536. Patented Nov. 10, 1914.

WITNESSES. INVENTOR A41? WWW, MmMiYaM TORNE Y NORRIS PETERS (10..PHOTO-LlTh WASHINGTON. D I

v UNITED STATES PATENT OFFICE.

CHARLES BALLREICH, 0F PUEBLO, COLORADO.

LAWN-SPRINKLER.

To all whom it may concern:

Be it known that I, CHARLES BALLREICH, a citizen of the United States,residing at Pueblo, in the county of Pueblo and State of Colorado, haveinvented a certain new and useful Improvement in Lawn-Sprinklers, ofwhich the following a full, clear, and exact description.

This invention is an improvement 111 lawn sprinklers and has for itsobject the provision of a simple, cheap and easily constructed devicewhich will distribute a spray throughout a truly semi-circular area.

In its preferred form the invention comprises means for connection to ahose combined with a hollow chamber into which the water is delivered,said chamber having a substantially semi circular slot therein throughwhich the water is ejected in the form of a spray. Though I do not wishto limit myself in this regard, I prefer to form the chamber either as acylinder, a frustum of a cone or a hemisphere with a cylindrical orfrusto-conical eXtens1on1n other words as a surface of revolution-and tolocate this chamber with its axis at right angles to the direction ofthe entering water. I also prefer to locate the slot ust below the topof the chamber so that said top may aid in directing the water towardthe slot. Ihave found, furthermore, that a more satisfactory spray isdelivered if the inner edge of the lower surface of the slot bemore'distant from the axis of the chamber than the outer edge of theupper surface of said slot. Such a shaped orifice located as describeddelivers a stream at an angle of about l5 degrees and the interferencepro duced therein by the particles of water ap-. proaching the orificefrom slightly different angles and by the slight inevitable roughness ofthe edges of the slot, wlll spray the water suiliciently to deliver ituniformly over the semi-circular area to be covered.

In order that water may leave a semicircular slot uniformly in quantityand velocity throughout the length of the slot, it

is necessary that the inertia of the water flowing in the feed pipe orhose, that is to say the tendency of this water moving in a givendirection to continue moving in that direction, be overcome as nearly asmay be and that the discharge shall be such as results from thehydrostatic pressure of the water only. The provision of a chamber whichhas its axis at substantially right angles to Specification of LettersPatent. I Patented No 10 1914, Application filed October 6, 1913. SerialNo. 793,742. i

the direction of the entering water, and preferably of a capacitygreater than a similar length of hose, results largely in overcoming theinertia of the entering water. I have found, however, that withinpractical sizes it is not convenient to entirely neutralize the enteringinertia of the water and that to obtain a truly semi-circular dischargeit is desirable to make the slot alittle more than a semi-circle inlength as indicated in the drawings.

Further and more particular advantages of my invention will later appearin the specification and be pointed out in the appendedclaims.

In the single sheet of drawings accompanying this application andforming a part hereof Figure l is a perspective of one form of sprinklerembodying my invention, this form being capable of being convenientlymade by casting; Fig. 52 is a central, vertical cross section of theform shown in Fig. 1; Fig. 3 is a central, vertical cross sec tion ofanother form of my invention, this form being capable of being readilymade by pressing or spinning; and Fig. L is a central, vertical crosssection through a still different embodiment of theinvention,

which form can be made either by stamping or casting. a y

In the embodiment shown in Figs. 1 and 2, 5 represents a base, 6 athreaded connection for a hose, and7 a chamber disposed at substantiallyright angles to the hose connection, which chamber in the form shown issubstantially cylindrical though slightly conical toward the upper end,9. A sub- This slot may be formed in The ground surface makes asubstantially 1 equal angle with the horizontal and vertical so that theimaginary vertical and horizontal lines A and B (Fig. 2) clear both theside and the top of the chamber. line C of Fig. 2 indicates the axis ofthe chamber '7 and points out clearly that the The dotted slot 8 isground through more than a semicircle. This is for the reason, aspreviously stated, that within practical limits of size of the chamber 7the direction imparted to the water by its passage through the hose cannot be entirely overcome and in order to obtain a truly semi-circularspray I have found it necessary to make the slot a little greater than asemicircle.

In Fig. 3 I have shown a modification in which the chamber 11 issubstantially a hemisphere, a short cylindrical shaped projection 12being formed thereon in which to make the slot or orifice 13. This slotalso may be made by grinding or filing away the metal, which in thisform is preferably stamped or spun and therefore thin. The angle ofgrinding, to give the same relation between the sides and top of theslot, and the circular length of the slot should preferably be the sameas those indicated in connection with the modification shown in Fig. 1.

In Fig. i I have illustrated a modification Which may be made either ofcast or pressed metal and in which the slot 1th may readily be sawed orcored out and still maintain the inner edge of the lower portion of theslot farther away from the axis of the chamber than the lower edge ofthe upper part of the slotwhich is the desirable relation as pointed outabove. In this form, which is that of a truncated cone, the sides of thechamber are inclined and the inclination to be given thereto isdetermined by two factors, namely, the thickness of the metal employedand the width of the slot to be made. The thicker the metal is made withthe same width of slot, the greater the inclination which must be givento the sides; and the wider the slot, with the same thickness of metal,the less inclination to the vertical need be given to the sides. It willbe obvious that only the upper portion of this modification (the partwherein the-slot is to be made) need be given the particular inclination whereby a horizontal incision will produce a slot through which thevertical F can be dropped without touching the sides and that theremainder of the chamber may Copies of this patent may be obtained forangles to the axis of said chamber, the top and lateral surfaces meetingfor approximately a semi-circle only whereby there is formed asubstantially semi-circular slot immediately below said top, the edgesof the top and lateral surface adjacent the slot being so beveled thatthe lower edge of said slot is farther distant from the axis of saidchamber than the upper edge thereof. 1

2. In a lawn sprinkler, a chamber having the lateral surface of a solidof revolution and a top and bottom disposed in planes at right angles tothe axis of said chamber, the top and lateral surfaces meeting forapproximately a semi-circle only whereby there is formed a substantiallysemi-circular 1 slot immediately below said top, the edges of the topand lateral surface adjacent the slot being so beveled that the loweredge of said slot is farther distant from the axis of said chamber thanthe upper edge thereof, and means in the lateral surface of said chamberadjacent the bottom thereof and on the side opposite said slot foradmitting water to said chamber.

In testimony whereof, I have hereunto signed my name in the presence oftwo witnesses. v CHARLES BALLREICH. lVitnesses:

EDITH A. WARNER, W'. B. VATES.

five cents each, by addressing the Commissioner of latentl, Washington,-D. C.

